However. Films across the generations are very different in terms of how they lay out a narrative. Watch any film before 1980 and you'll start to see a pattern that the pacing and evolution of the narrative is generally very, very slow.
Art is highly contextualized by the period it's created in. I don't really think it's fair to expect people to appreciate art when it's taken completely out of its context.
Lawrence of Arabia, for example. What a brilliant, brilliant film. Beautiful, influential, impressively produced. And really, really boring and slow a lot of the time.
If I were a film professor today, hell even 20 years ago, I would not expect a modern film student to sit through that whole thing. I think it's my job as a professor to understand the context of the period, highlight the influential/important scenes, and get students to focus on those instead of having to watch 4 hours of slowly paced film making and possibly miss the important stuff.